Calculating Orbital Velocity

Let us understand how to calculate the orbital velocity with a simple example.

Example: A satellite is orbiting around a planet where the radius of the planet is found to be 7.68 x 107 m, gravitational constant is 7.12 x 10-9 m3/s2 kg and mass of the planet is found to be 6.45 x 1022 kg. Find the orbital velocity.